diff --git a/src/dev/net/ethertap.cc b/src/dev/net/ethertap.cc
index 979b03ee15..5b1e957146 100644
--- a/src/dev/net/ethertap.cc
+++ b/src/dev/net/ethertap.cc
@@ -472,6 +472,6 @@ EtherTap::sendReal(const void *data, size_t len)
     return true;
 }
 
-} // namespace gem5
+#endif // HAVE_TUNTAP
 
-#endif
+} // namespace gem5